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國小教甄|英語英語109 年第 57 題單選題
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Our society today is implicitly providing an infrastructure for outsourcing knowledge. Most of us wouldn’t know how to get grain seeds, how to sow, till, harvest them, make flour, make bread and so on. Most of the things that we rely upon every single day are beyond our capability of producing, and for most of them we don’t even have the knowledge required. Yet this is not a problem, our knowledge is about using something that someone else had produced and made available. We accept this implicitly because, by far, this works. Besides, there is no alternative. A single person would not have the possibility to possess all the knowledge that is now available and that is required to run our life. We have come to accept this segmentation of knowledge and even our schooling system is geared towards a segmentation. We get the basic tools we need to learn, and then we apply them to learn some specific things. The tools available for learning have increased in the last decades and they keep increasing to the point that it is becoming impossible to learn all of them. Hundred years ago it was about learning to read and write and little else. Then we learnt the tools of the trade, the specific one in our profession. Now young people have to learn how to use the Internet (only very few know how to build the Internet system and we are not teaching them) and have to learn to apply specific tools to extract knowledge from a rapidly growing set of data. Soon they will have to learn how to use augmented reality and virtual reality, how to interact with collaborative robots, and how to balance their knowledge with the one of artefacts. In the meantime, the knowledge half-life (the time it takes for 50% of what they know to lose its value, become useless, or superseded) is shrinking. It is now below 5 years in technology areas (IT knowledge reaches its half-life in less than 2 years!). More than ever in the past knowing how to ask the right question and “whom” to ask becomes crucial. This is happening and effective steps should be taken before it is too late.

What does the expression “IT knowledge reaches its half-life in less than 2 years” imply?

AIt takes 2 years for IT engineers to learn 50 percent of the knowledge they need.
BOnly 50 percent of IT knowledge can be verified to be useful in less than two years.
CIn less than at least two years about most IT knowledge will go through a midterm review.
DIt takes 2 years for $50\%$ of what IT experts know to lose its value, become useless or superseded.正確答案
答案與詳解
D
正確答案
本題應依文章對知識半衰期的定義理解:不到兩年,一半的 IT 知識會過時、失效或被取代。

為什麼答案是 D

此選項最接近文章定義:知識半衰期是指一定比例的既有知識失去價值、變得無用或被取代。雖然原文強調不到兩年,但在四個選項中,此選項最符合 half-life 的概念。

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